Description
ND13 screw cap in black polypropylene (PP) is a closed 13 mm laboratory closure with 13-425 thread for secure sealing of matching screw-thread vials. The closed design is combined with a natural rubber red-orange / TEF transparent septum, hardness 60° Shore A and thickness 1,3 mm, providing a resilient liner for sample containment and needle penetration in analytical workflows. Polypropylene construction gives chemical resistance appropriate for routine chromatography and sample-storage applications, while the standardised 13-425 geometry supports interchangeability with common ND13 vial systems. The bonded septum layer helps maintain seal integrity during handling, transport and autosampler use. Supplied in packs of 1000 pieces from manufacturer Altmann Analytik, this closure suits high-volume laboratories performing HPLC, GC or general sample preparation that require a ready-to-use black PP cap with defined septum hardness and thickness. Clear specification of liner type and mechanical properties supports method documentation and consistent sealing performance across batches.
This article is part of Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 1000 pc(s)
- Material: polypropylene (PP)
- Colour: black
- Thread: 13-425
- Design: closed ND13 screw cap
- Septum: natural rubber red-orange/TEF transparent
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Questions about 13 mm Seal PP Screw Cap, black, closed, Natural Rubber red-orange/TEF transp.
What is this article?
13 mm Seal PP Screw Cap, black, closed, Natural Rubber red-orange/TEF transp. is the article on this page. Luminix Health distributes Altmann Analytik for laboratory use. It sits in Vial caps & septa, inside Vials, caps & septa, in Chromatography equipment.
A vial cap and a septum have to match the vial neck: crimp, screw or snap, and the diameter. The septum material, PTFE/silicone or rubber, decides chemical resistance and how many times a needle can pierce it. A septum that sheds into the solvent becomes ghost peaks.
An autosampler vial is the small closed bottle a chromatograph picks up. The neck is crimp, screw or snap, and the cap and the septum have to be that neck. The septum is the part the needle pierces. A soft septum reseals. A septum that is wrong for the solvent swells or sheds particles into the sample. Inserts reduce the volume when the sample is scarce. The separation they feed is described with IUPAC names and PubChem data.
Which category should I open next?
The category is Vials, caps & septa. The sub-category is Vial caps & septa. The catalogue is Chromatography equipment.
Shelves beside this one are Chromatography accessories, Autosampler vials, Crimpers & decappers and Vial inserts.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
